From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Request to detail the parts needed to adapt a standard B.II fan blade set and flange onto a B.III fan, and correct the speed ratio.
| Identifier | ExFiles\Box 99\3\ scan0011 | |
| Date | 19th July 1938 | |
| 424 To By/Ald.{F. Allwood - Experimental Design} from Rm{William Robotham - Chief Engineer}/Std. Rm{William Robotham - Chief Engineer}/Std.15/MH.{M. Huckerby}19.7.38. Will you please detail the necessary pieces to enable us to use the standard B.II set of fan blades and flange on the B.III fan, and also the fan pulley to correct the speed ratio to the same as that of the B.II., that is to say, .9/1. Rm{William Robotham - Chief Engineer}/Std. | ||